Malicious PDF — malware analysis report

Static analysis result for SHA-256 26478fad149d342e…

MALICIOUS

PDF

65.7 KB Created: 2021-03-09 12:27:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 85a4acec5638d65a68ed7f0358ea9fe1 SHA-1: de4f6e6492ce13a9a40f3f196e2485170a2af01e SHA-256: 26478fad149d342e8657f17dc3ff4dfe4d212f46278a050efefdf90d9ece8cf5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://kuzutuzo.ru/award?keyword=the+prince+and+the+pauper+penguin+readers+level+2+pdf PDF link annotation
    • http://wordwild-store.com/93768884149s3xzv.pdfIn PDF document text
    • https://fefezotexarij.weebly.com/uploads/1/3/4/2/134265886/gezowejadozapid_wujodel.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/how_to_reschedule_dmv_appointment.pdfIn PDF document text
    • https://mixusabap.weebly.com/uploads/1/3/4/0/134096097/5484755.pdfIn PDF document text
    • https://pusasosabuni.weebly.com/uploads/1/3/4/6/134654602/fagejamazadirililog.pdfIn PDF document text
    • http://kawlites.online/fuvepedozeromfnk0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415951/normal_5fccb92d49a3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424349/normal_5ffe74a373208.pdfIn PDF document text
    • https://rugomekedakore.weebly.com/uploads/1/3/5/3/135302214/simew-rudegupevuvugib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410731/normal_6012db4765a25.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/ariens_824_snowblower_shear_pin_size.pdfIn PDF document text
    • http://muzoc.xyz/57313837132bagfg.pdfIn PDF document text
    • https://ziluxokoker.weebly.com/uploads/1/3/4/3/134392919/9294898.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/tefibomera55sbp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384633/normal_5ffae980284d1.pdfIn PDF document text
    • https://bilokomomaxin.weebly.com/uploads/1/3/5/3/135397692/koreli.pdfIn PDF document text
    • https://pepakulal.weebly.com/uploads/1/3/4/8/134885681/deludu.pdfIn PDF document text
    • http://verifedform.com/handel_hallelujah_sheet_music_pianoiwfj7.pdfIn PDF document text
    • http://generatorsale.ru/beneath_the_skin_album_zipk3cql.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c52b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC52B 5560 bytes
SHA-256: 1d502eb31c663741cb94a5fdeb5fd1c939635d97e946659a16b46a28e0241d4a
font_01_sfnt_off0000d81b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD81B 9800 bytes
SHA-256: ab957e396000b75e14532d114279608efab72f2df1dbd6ce10f01da888da074a

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